Hearth Record

Service brakes, air: supply: check valve (GMC and Chevrolet)

Vehicle recall 84V-120. NHTSA received GENERAL MOTORS CORP.’s report on Oct 2, 1984.

NHTSA’s own record, on nhtsa.gov

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The short answer

NHTSA received GENERAL MOTORS CORP.’s report on Oct 2, 1984. Copied from NHTSA on Oct 20, 2026.

Every line below is in NHTSA’s own words, with its source beside it.

What’s wrong with it?

The notice gives no hazard in a field of its own.

THE DUAL AIR RESERVOIRS OF SOME TRUCKS WERE EQUIPPED WITH CARBON STEEL SPRINGS INSTEAD OF STAINLESS STEEL SPRINGS, AS INTENDED.

THE CARBON STEEL SPRING IS MORE SUSCEPTIBLE TO RUSTING THAN THE STAINLESS STEEL SPRING.

THIS RUSTING COULD CAUSE THE CHECK VALVE TO FAIL, CAUSING TOTAL LOSS OF FRONT AND REAR BRAKES.

Source:

NHTSA, Recalls flat file before 2010. Released Oct 20, 2026. Updated daily.

  • NHTSA’s part: Service brakes, air: supply: check valve.

What should you do?

THE AIR TANK WILL BE INSPECTED AND, IF NECESSARY, THE AIR VALVE WILL BE REPLACED WITH ONE CONTAINING A STAINLESS STEEL SPRING.

Source:

NHTSA, Recalls flat file before 2010. Released Oct 20, 2026. Updated daily.

  • How to reach the firm: VEHICLE DESCRIPTION: MEDIUM TRUCKS EQUIPPED WITH AIR BRAKES.SYSTEM: SERVICE BRAKES; AIR SUPPLY CHECK VALVE.CONSEQUENCES OF DEFECT: IF AN AIR LEAK WERE TO OCCUR AND THE DRIVER DID NOTHEED WARNINGS, AN ACCIDENT COULD RESULT.
  • Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.

Which ones are recalled?

NHTSA counts 3,948 vehicles potentially involved, across everything this recall names.

Source:

NHTSA, Recalls flat file before 2010. Released Oct 20, 2026. Updated daily.

  • GMC C6and 1983, before the model years listed here
  • Chevrolet C6and 1983, before the model years listed here
  • Chevrolet P6and 1983, before the model years listed here
  • GMC C7and 1983, before the model years listed here
  • Chevrolet C7and 1983, before the model years listed here

Who is recalling it?

  • Made by GENERAL MOTORS CORP..
Source:

NHTSA, Recalls flat file before 2010. Released Oct 20, 2026. Updated daily.

What the record doesn’t say

  • NHTSA’s recall file doesn’t say whether anyone was hurt.
  • Whether one vehicle or seat has been fixed: only its maker, or NHTSA’s lookup with a VIN, can say.
  • This recall names only model years before 2015, which have no pages here. Your VIN, at NHTSA, says which recalls are open on a vehicle.
  • How many have been returned or fixed isn’t in the notice.
Source:

Hearth Record wrote these lines.

Sources

Source:

Vehicle, car seat, tire and vehicle equipment recalls, owner complaints and crash ratings are from the National Highway Traffic Safety Administration (NHTSA). Copied on Oct 20, 2026.

How to read a record

Four things every record does, shown on an example record made up for this guide.

An example record, made up for this guide

An example nursing home

Made up for this guide: no real place is shown

Not fully inspected in over two years (CMS flag)

11 health citations at the latest inspection cycle

The state average is 14.3.

Source:

CMS, State and US Averages and Health Deficiencies. Released Oct 28, 2026. Updated monthly.

From the homeNone yet. Replies and paid listings aren’t open, and when they open they will sit here, below the record.

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Every fact names its source.

Who published it, when, and how often it changes sit beside each fact, with a link to the agency’s own file.

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